WO2004011686A1 - 射出発泡成形方法及び射出発泡成形装置 - Google Patents
射出発泡成形方法及び射出発泡成形装置 Download PDFInfo
- Publication number
- WO2004011686A1 WO2004011686A1 PCT/JP2003/009698 JP0309698W WO2004011686A1 WO 2004011686 A1 WO2004011686 A1 WO 2004011686A1 JP 0309698 W JP0309698 W JP 0309698W WO 2004011686 A1 WO2004011686 A1 WO 2004011686A1
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- WIPO (PCT)
- Prior art keywords
- molten metal
- injection
- foaming
- mold
- temperature
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/2015—Means for forcing the molten metal into the die
- B22D17/2061—Means for forcing the molten metal into the die using screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/005—Casting metal foams
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
- C22C1/083—Foaming process in molten metal other than by powder metallurgy
- C22C1/087—Foaming process in molten metal other than by powder metallurgy after casting in solidified or solidifying metal to make porous metals
Definitions
- the present invention relates to an injection foam molding method and an injection foam molding apparatus for foaming a melt of a light alloy to form a foam molded article.
- Conventional methods for producing foamed metal include the following.
- method 1 there is a method described in Japanese Patent Publication No. 11-51528.
- This product is prepared by adding a viscous material and a foaming material to the molten metal and stirring the mixture, and heating the entire mold to a temperature at or above the melting point of the foamed metal.
- the inside is sealed, and the internal pressure rises due to a large number of bubbles to form a uniform cell structure under pressure balance, and the foamed metal is cooled and solidified in the mold.
- the above-mentioned methods 1 to 4 for producing a foamed metal have the following problems.
- method 1 the molten metal is heated and stirred in the mold, so that it takes time to heat, and the same mold is used for cooling after foaming, so there is a problem in productivity.
- large molds require large molds. In the case of large molds, heating and cooling are limited to heat conduction and electric heat from the walls. Since it is a metal with excellent physical properties, it takes extra time.
- method 2 it is possible to form a metal body continuously by foaming with hydrogen gas as in method 1, but this method has no function of injecting it into the mold and has a desired three-dimensional shape. Unable to mold molded products with complex shapes. Also, in order to maintain a constant mixing ratio of molten metal and a foam material such as titanium hydride / magnesium hydride, it is only possible to control the screw speed and it is unstable. It cannot do this, and the foaming rate is not stable. Therefore, there is a problem that the variation in the product quality (foamed state) is increased. In method 3, in order to obtain a uniform foam, it is necessary to mix the powder uniformly, which takes time and is expensive.
- Method 4 can form a three-dimensional shape, but as in the problem of Method 1, the molten metal is reheated to more than 630 ° C in the mold, so it takes time and there is a problem in production efficiency. . In addition, it is necessary to raise the temperature of the mold 6 to 63 ° C. or higher, which increases the cost of the mold ⁇ ⁇ . In addition, when the size of the mold is large, it is difficult to control the temperature of the molten metal in the mold, and there is a problem that the quality varies greatly.
- An object of the present invention is to provide an injection foam molding method and an injection foam molding apparatus for a light alloy that can reduce the difference in the foaming state between the batches and have high productivity. Disclosure of the invention
- the injection foam molding method for a light alloy comprises the steps of: After holding, then stirring the molten metal to disperse the thickener and the foaming material, measure a predetermined amount for injection into the mold, and inject into the mold to foam the light alloy.
- the thickener and the foaming material are added to the molten metal in a predetermined ratio in advance, the difference in the foaming state between the batches is reduced. Also, just before injection, Decomposition occurs, but since the volume in the measuring section is constant, foaming of the molten metal is suppressed and the molten metal is pressurized. As a result, the molten metal is foamed by releasing the pressure at once in the mold immediately after injection, so that it can be spread to every corner of the mold so that the mold transferability is good, and it is possible to mold foamed molded products of complex shapes . Further, since it is not necessary to heat the mold temperature to a temperature higher than the decomposition temperature of the foamed material, productivity is improved.
- the injection molding method for a light alloy according to the present invention is characterized in that a molten metal of a light alloy to which a thickener and a foaming material that decomposes at a high temperature to generate a gas component are added by a predetermined ratio is less than the decomposition temperature of the foaming material.
- the molten metal is released at a stroke in the mold and foamed, so that it can be spread to every corner of the mold and the transferability of the mold is good. .
- the mold temperature does not need to be heated to a temperature higher than the decomposition temperature of the foam material, productivity is improved.
- the temperature of the molten metal is lower than the decomposition temperature of the foamed material when the molten metal is stirred.
- the foamed material By maintaining the temperature of the molten metal below the decomposition temperature of the foamed material during stirring, the foamed material can be uniformly dispersed without being decomposed in the molten metal.
- the injection foam molding method for a light alloy comprises dispersing the viscous material by stirring a melt of the light alloy to which a predetermined amount of a thickener has been added, and disposing an inert gas as a foam material in the melt. After supplying and stirring a predetermined ratio to disperse the inert gas, a predetermined amount is weighed to inject the molten metal into the mold, and the molten metal is injected into the mold to form a light alloy foam molded article.
- a method for injection foaming molding of a light alloy wherein foaming is suppressed by supplying the molten metal to a pressurized state until at least the inert gas is supplied and before the injection is performed. It is characterized by the following.
- a foam molded article with a substantially uniform cell structure by stirring and dispersing the molten metal to which the viscous material has been added, supplying a predetermined amount of inert gas into the molten metal, and stirring and uniformly dispersing the molten gas with the screw. Can be formed. Further, since the inside of the measuring section is pressurized before injection is performed, foaming of the inert gas in the molten metal is suppressed. Therefore, immediately after injection, the molten metal is released at a stretch in the mold and foamed, so that it can be spread to every corner of the mold and the transferability of the mold is good. Become. In addition, since the mold temperature does not need to be heated to a temperature higher than the decomposition temperature of the foam material, productivity is improved.
- the pressurized state is generated by a pressing force generated by performing the stirring with a screw.
- a predetermined amount of thickener and foam added to the molten metal are stirred and dispersed, and the inside of the measuring section can be pressurized by the pressing force of a screw that feeds the molten metal to the front of the pallet. Therefore, foaming of the foam material in the molten metal can be suppressed.
- the injection amount of the molten metal is reduced by the amount of foaming with respect to the inner volume of the mold, and the molten metal is injected. It is characterized by foaming inside a mold to obtain a foam molded article.
- the injection amount of the molten metal is set to be equal to the inner volume of the mold, and the mold is opened only by the volume of the foam to maintain the pressurized state. By removing the molten metal, the molten metal is foamed to obtain a foamed molded article.
- the injection molding method for a light alloy according to the present invention is characterized in that a molten metal of a light alloy to which a thickener and a foaming material that decomposes at a high temperature to generate a gas component are added by a predetermined ratio is less than the decomposition temperature of the foaming material.
- the molten metal is supplied into a barrel provided with a screw that is rotatable and retractable, and the molten metal is agitated by rotating the screw so that the thickener and the foam material
- the molten metal is measured by a measuring section formed in front of the barrel by rotating the screw and moving backward, so that at least immediately before injection, the temperature of the molten metal is equal to or higher than the decomposition temperature of the foamed material.
- the temperature of the molten metal is adjusted as described above, and the retraction of the screw is stopped, so that the molten metal is put into a pressurized state in the measuring section having a constant volume to suppress foaming and advance the screw.
- the method is characterized in that the molten metal is injected into a mold to obtain a foamed molded product.
- the thickening material and the foaming material are added in a predetermined ratio to the melt of the light alloy to be supplied into the barrel, the thickening material and the foaming material are uniformly dispersed in the kneading portion in the barrel. Then, since the molten metal is injected after being measured, the difference in the foaming state between the batches is reduced. In addition, although the foam is decomposed just before injection, the volume of the melt is kept constant by stopping the screw, and foaming of the molten metal is suppressed, and the molten metal is in a pressurized state.
- the molten metal is released in a mold immediately after the injection, and the pressure is released all at once, so that the molten metal spreads to every corner of the mold. Becomes possible.
- the productivity is improved since it is not necessary to heat the mold at a temperature higher than the decomposition temperature of the foam, the productivity is improved.
- the injection foam molding method of a light alloy comprises: a barrel provided with a screw therein; and a cylinder having a plunger therein which communicates with the barrel in the front through a communication flow path inside the barrel.
- a thickening material and a foaming material that decomposes at a high temperature to generate a gas component are added by a predetermined ratio, and Supplying a molten metal of light alloy held at a temperature lower than the decomposition temperature of the material into the barrel; and (b) agitating the molten metal by rotating the screw in the barrel.
- a stirring step of dispersing the thickener and the foaming material and (c) introducing and measuring the molten metal from the inside of the barrel through the communication flow path to a measuring section formed in the front of the cylinder by retreating the plunger.
- a thickener and a foaming material are added in a predetermined ratio to the molten metal in advance, and the temperature is maintained at a temperature lower than a decomposition temperature of the foaming material. Then, the mixture is introduced into an injection molding apparatus, and is stirred in the injection molding apparatus. The foaming material is dispersed, and the difference in the foaming state between each batch is reduced. In addition, the foam material is decomposed immediately before injection, but the volume is kept constant by stopping the plunger, foaming of the molten metal is suppressed, and the molten metal is in a pressurized state.
- the molten metal is released in a mold at a stretch, and the foam is blown out, so that the mold can be transferred to every corner of the mold. It is possible. In addition, since it is not necessary to heat the mold at a temperature higher than the decomposition temperature of the foam material, productivity is improved.
- the injection molding method for a light alloy according to the present invention is characterized in that a molten metal of a light alloy to which a thickener and a foaming material that decomposes at a high temperature to generate a gas component are added by a predetermined ratio is less than the decomposition temperature of the foaming material.
- the molten metal is stirred to disperse the viscous material and the foaming material. Thereafter, a predetermined amount for injecting the molten metal into the mold is measured, and the molten metal is injected into the mold via an injection nozzle.
- Injection molding of a light alloy to form a light alloy foam molded article by injecting the molten metal into a mold, wherein the molten metal is heated to at least the decomposition temperature of the foamed material at least immediately before injection into a mold. It is characterized by the following.
- the thickener and foaming material are added to the molten metal in a predetermined ratio in advance, batch The difference in the foaming state between the two becomes smaller. Further, since the temperature of the molten metal is raised to at least the decomposition temperature of the foamed material at least immediately before injection into the mold, there is no need to reheat the mold to a temperature equal to or higher than the decomposition temperature of the foamed material. Time is short, and productivity is improved.
- the injection foam molding method for a light alloy of the present invention is characterized in that when the molten metal passes through the nozzle, the temperature is raised to a temperature not lower than the decomposition temperature of the foamed material.
- the viscous material and the foaming material are added to the molten metal in a predetermined ratio in advance, the difference in the foaming state between batches is reduced.
- the temperature is raised to a temperature higher than the decomposition temperature of the foam material, so that the mold does not need to be reheated to a temperature higher than the decomposition temperature of the foam material, and the cooling time of the mold is also reduced. Shorter and more productive.
- the light alloy injection foam molding apparatus of the present invention is provided with a melt of a light alloy to which a viscous material and a foaming material which decomposes at a high temperature to generate a gas component are added, and is rotatably provided therein.
- the position holding means is an electromagnetic valve capable of blocking oil from flowing into and out of a hydraulic cylinder provided in a hydraulic circuit of a hydraulic cylinder for moving the movable member forward and backward. It is characterized by
- advance / retreat of the movable member can be easily controlled. Therefore, the position of the movable member can be controlled in accordance with the foaming state of the foam material, and the molten metal can be easily maintained in a pressurized state.
- the movable member comprises a rotatable stirring screw.
- the thickener and the foamed material in the molten metal supplied into the cylindrical member can be evenly dispersed.
- the injection foam molding apparatus for a light alloy of the present invention wherein the cylindrical member comprises a barrel for stirring the molten metal, and a cylinder connected to the cylinder for introducing and measuring the stirred molten metal,
- the movable member is a plunger provided in the cylinder.
- the injection foam molding apparatus for a light alloy of the present invention comprises a thickener and A melt of a light alloy to which a foaming material that generates a gas component by melting is added, and a temperature adjusting means capable of adjusting the temperature of the melt from below the decomposition temperature of the foam to above the decomposition temperature is provided.
- a barrel capable of generating a gas component in the molten metal by adjusting the temperature of the molten metal to a temperature equal to or higher than the decomposition temperature of the foamed material by the temperature adjusting means; By agitating the molten metal to disperse the thickener and the foaming material, and by retreating, the measuring section is formed at the tip of the helmet in cooperation with the helium, and the helium is advanced.
- a screw configured to inject the weighed molten metal from the barrel into the mold; and, in a state where the weighing is completed, maintaining the molten metal in a pressurized state and suppressing foaming thereof.
- Gas components evolve And it is characterized in that it comprises a position holding means for holding the position of the screw to pile pressure increase pressure of said barrel upon.
- the molten metal to which the thickener and the foaming material are added in advance can be supplied into the barrel and can be reliably dispersed, so that the difference in the foaming state between injections is small.
- the temperature of the molten metal in the barrel can be easily adjusted, the state of the foam material in the molten metal can be controlled, and the difference in the foaming state between each patch can be further reduced.
- the temperature can be adjusted so that the foam material is decomposed immediately before injection, and the volume of the measuring section in the barrel can be kept constant by the screw position holding means, so that foaming of the molten metal can be suppressed and the molten metal can be pressurized. State and can.
- the molten metal is foamed by releasing the pressure at once in the mold immediately after injection, so that the mold can be transferred to every corner of the mold and the transferability of the mold is good. .
- productivity is improved since it is not necessary to heat the mold at a temperature higher than the decomposition temperature of the foam material.
- the injection foam molding apparatus for a light alloy of the present invention comprises a thickener and A melt of a light alloy to which a foaming material that generates a gas component by melting is added is supplied, and the molten metal has first temperature adjusting means capable of adjusting the temperature to a temperature lower than the decomposition temperature of the foaming material and is rotatable inside.
- a cylinder having a temperature adjusting means, and a measuring portion which is provided inside the cylinder so as to be capable of moving forward and backward, and which moves backward to form a measuring portion for measuring the molten metal in cooperation with the cylinder at the tip of the cylinder and moves forward to measure.
- a plunger for injecting the molten metal into the mold from the cylinder, and the foaming is suppressed by holding the molten metal in a pressurized state when the measurement is completed. It is characterized in that the scan component is provided with a position hold means for holding the position of the plunger to pile pressure increase of the cylinder when that occurred.
- the molten metal to which the thickener and the foaming material are added in advance can be supplied into the barrel, and this can be reliably dispersed. Become smaller.
- the foaming material is decomposed immediately before injection, but the position of the movable member can be held by the position holding means, and the volume of the measuring portion in the cylindrical member can be kept constant, so that foaming of the molten metal can be suppressed, and the molten metal can be suppressed. Can be in a pressurized state. Therefore, immediately after injection, the molten metal is released in a mold at a stretch, and the foam is blown out, so that the mold can be transferred to every corner of the mold. It is possible.
- the light alloy injection foam molding apparatus of the present invention has a thickener and 2003/009698
- the molten metal of the light alloy to which the foaming material which decomposes at high temperature and generates a gas component is supplied, and the molten metal is stirred by a stirring means rotatably provided in the molten metal, and the viscous material is stirred.
- the molten metal to which the thickener and the foaming material are added in advance can be supplied into the barrel and can be reliably dispersed, so that the difference in the foaming state between injections is small. Become. Further, since the molten metal is injected through the injection nozzle, the injection pressure can be increased. Also, when the molten metal passes through the nozzle, that is, immediately before injection into the mold, the temperature of the foam is set to a temperature equal to or higher than the decomposition temperature of the foamed material, so that the foamed material is decomposed to generate gas components. Since the foam is blown all at once, it is not necessary to heat the mold to a temperature higher than the decomposition temperature of the foamed material, thus improving productivity.
- FIG. 1 is an overall explanatory diagram showing an example of an embodiment according to a light alloy injection foam molding apparatus of the present invention.
- FIG. 2 is an overall explanatory diagram showing an example of an embodiment according to the light alloy injection foam molding apparatus of the present invention.
- FIG. 3 is a view showing a main part of an example of an embodiment of the light alloy injection molding apparatus of the present invention, and is a view for explaining a molding step.
- FIG. 4 is a view showing a main part of an example of an embodiment of the light metal injection molding apparatus according to the present invention. It is a figure for explaining a process.
- FIG. 5 is a view showing a main part of an example of an embodiment of the light alloy injection molding apparatus of the present invention, and is a view for explaining a molding step.
- FIG. 1 shows an example of an embodiment of the present invention.
- an injection foam molding apparatus 1 according to the present embodiment includes an injection molding apparatus 3 and a mold clamping apparatus 17.
- the injection molding apparatus 3 is provided with a supply port 8 for supplying a melt of a light alloy to which a thickener and a foaming material that decomposes at high temperature to generate a gas component are supplied, and a stirring means 4 rotatably provided.
- a movable member B for injecting the molten metal in which a gas component has been generated into a mold 24 communicating with the measuring section 6 by moving forward.
- Position holding means C for holding is provided.
- the barrel 7 for stirring the molten metal as the cylindrical member A is provided with a temperature adjusting means 10 for adjusting the temperature of the supplied molten alloy 2 of the light alloy and the molten alloy 2 of the light alloy supplied to the injection section 9. ing.
- an injection unit 9 for injecting the molten metal 2 measured by the measuring unit 6 into the mold 24.
- the barrel 7 is substantially vertical, so the supplied melt 2 of the light alloy is reliably moved downward in the kneading section 5 by its own weight.
- the injection section 9 has an L-shaped flow path 11 formed therein, and the flow path of the light alloy melt 2 is vertical during kneading and stirring and horizontal during injection. Therefore, even if the injection molding device 3 and the mold clamping device 17 are connected as shown in FIG. 1, the installation area of the injection foam molding device 1 can be reduced as much as possible.
- This injection foam molding apparatus 1 is provided with a nozzle section 13 provided with a valve means 12 at the tip of an L-shaped flow path 11 provided at the lower end of a barrel 7. This tip is in contact with a mold 24 that slides horizontally by a mold clamping device 17 to open and close.
- the hopper 1 4 intended for storing it receives a melt of the light alloy dissolved in a melting furnace (not shown) in the molten state, the lower end opening of the hopper 1 4 Is connected to the supply port 8 at the top of the barrel 7.
- the hopper 14 is provided with temperature control means such as a heater. With this temperature control means, the molten metal 2 in the hopper 14 can be controlled, for example, to a constant temperature equal to or higher than the liquidus temperature and lower than the foaming temperature of the foam material, or to a temperature equal to or higher than the decomposition temperature of the foam material. It becomes possible.
- the hopper 14 is provided with a feeder for quantitatively supplying the thickener and the foaming material to be added to the light alloy 2.
- a feeder for quantitatively supplying the thickener and the foaming material to be added to the light alloy 2.
- a powdery viscous material and a foaming material are supplied in a fixed amount, and the difference in the foaming state between the batches can be reduced.
- the melt of the light alloy to which the viscous material and the foam material are added in a predetermined amount may be directly supplied to the hopper 14.
- a known material such as calcium can be used.
- Known metal hydrides such as titanium hydride can be applied to the foam material. Titanium hydride is Gas decomposition occurs around 640 ° C.
- the liquidus temperature is 630 ° C, and the liquidus temperature or more described later refers to 630 ° C or more.
- the hopper 14 is filled with an inert gas 18 such as Ar supplied by the inert gas supply device 16, and the surface of the molten metal 2 of the light alloy is filled with the inert gas 18. It is made to seal with.
- Position holding means C is provided at the upper end of the barrel 7 which is the cylindrical member A.
- the position holding means C includes a drive motor 19 and a screw hydraulic cylinder 21 connected to the drive motor 19.
- the drive shaft of this drive motor 19 is provided with a through-spline hole, and the spline shaft provided at the top of the screw 4 rotatably passed through the inside of the barrel 7 is passed through.
- the transmission of the rotational driving force and the axial movement of the screw 4 are allowed.
- a screw hydraulic cylinder 21 having a cylinder rod 20 that moves up and down in the vertical direction is connected to an upper portion of the drive motor 19.
- a screw 4 is connected to a cylinder rod 20 of the screw hydraulic cylinder 21, and is disposed in a cantilever manner so that a lower end thereof is a free end in a barrel 7. Therefore, the cylinder blade 20 of the screw hydraulic cylinder 21 is protruded downward, so that the stirring blade of the screw 4 is moved forward (moved downward) via the drive motor 19, so that the barrel 7
- the molten metal 2 of the light alloy stored at the lower end of the nozzle is allowed to pass through the L-shaped flow path 11 and injected into the mold 24 via the nozzle 13.
- the screw hydraulic cylinder 21 is operated to move the movable member B.
- a measuring portion 6 is formed at a lower portion in the barrel 7.
- the measuring section 6 can be appropriately set by the retreat amount of the screw hydraulic cylinder 21 so as to have a capacity necessary for obtaining a molded product.
- the valve means 12 of the nozzle part 13 is in a closed state except at the time of injection. Further, the same means as described later can be applied to the valve means 12.
- the outer peripheral surfaces of the barrel 7 and the injection section 9 are covered with temperature adjusting means 10.
- the temperature adjusting means 10 is composed of a plurality of heaters vertically separated. The heater controls the temperature of the light alloy melt 2 in the barrel 7 by at least two systems. Thereby, the temperature can be controlled above and below the barrel 7 and the decomposition of the foam material in the molten metal 2 can be controlled.
- the mold clamping device 17 includes a link housing 26 erected on a base 25, a fixed plate 28 fixed to the housing 26 via a horizontal tie bar 27, and a fixed plate 2
- the fixed mold 24 b fixed to 8 the movable platen 29 slidably supported by the fiber 27, and the horizontal slide relative to the fixed mold 24 b open and close
- a mold clamping cylinder 30 is fixed to the center of the outer surface of the link housing 26, and the tip of the cylinder rod 31 of the mold clamping cylinder 30 is connected to the center of the movable plate 29.
- the link housing 26 and the movable board 29 are connected by a plurality of links 32 that are folded when they approach each other and are substantially aligned in a horizontal direction when they come apart.
- An extruding cylinder 3 3 is provided on the side of the movable housing 29 on the side of the link housing 26.
- the pushing rod 34 of the extruding cylinder 33 extends through the movable board 29 to protrude the product of the movable mold 24 a. It is connected to the mechanism. Subordinate In this mold clamping device 17, the cylinder rod 31 of the mold clamping cylinder 30 is protruded to extend the link 32 in a straight line, and the link 32 is stretched to move.
- the mold 24a can be strongly pressed against the fixed mold 24b.
- the product is released from the mold by operating the product ejecting mechanism by projecting the pushing rod 34 of the pushing cylinder 33.
- the molten metal 2 is injected into the mold 24 at a stretch after injection of the molten metal 2 of the light alloy. It is possible to mold a foamed molded article with a complicated shape. Also, since the mold temperature does not need to be heated to a temperature higher than the decomposition temperature of the foam material, productivity is improved.
- the molten metal 2 of the light alloy charged into the hopper 14 is sent from a melting furnace (not shown) by a mechanical or electromagnetic pump or the like.
- the melting furnace is not particularly limited, and may be a high-frequency induction furnace, an electromagnetic induction heating furnace, or the like.
- the temperature of the melt 2 of the light alloy in the hopper 14 is adjusted by a temperature control means such as a heater provided in the hopper 14 to a temperature equal to or higher than the liquidus temperature and lower than the decomposition temperature of the foamed material, so that the temperature becomes uniform. Is kept.
- a feeder (not shown) provided in the hopper 14 supplies the thickened material and the foamed material to the molten light alloy 2 in a fixed amount.
- a stirring means for stirring the melt 2 of the light alloy in the rehopper 14 can be provided to provide a stirring action. Further, by providing the above-mentioned inert gas supply device 16 in the hopper 14, oxidation of the molten metal can be prevented. Next, the molten metal 2 of the light alloy charged into the hopper 14 is supplied to the upper part of the barrel 7 in a gas-sealed state, and the molten metal of the light alloy is heated by the heater.
- the temperature is adjusted and maintained above the liquidus temperature of 2 and below the decomposition temperature of the foamed material.
- the screw 4 is rotated in the kneading section 5 in the barrel 7 to stir the melt 2 of the light alloy, Disperse foam. Therefore, when the foaming material is maintained at a temperature lower than the foaming temperature during the stirring, the foaming material is in a powder form and can be uniformly dispersed.
- an inert gas quantitative supply device (not shown) is provided in the barrel 7 corresponding to the kneading unit 5.
- the inert gas which is a foaming material, is supplied to the molten metal at a predetermined ratio, so that the inert gas can be evenly dispersed in the molten metal 2.
- the screw 4 rotates and retreats due to an increase in the internal pressure of the barrel 7 caused by the rotation, but the screw 4 stops rotating and is rotated by the screw hydraulic cylinder 21.
- the screw may be retracted, or may be retracted by the screw hydraulic cylinder 21 while rotating.
- the temperature of the molten metal 2 is adjusted by the heater to the decomposition temperature of the foam material in the weighing section 6 and the screw 4 is stopped from retreating.
- the molten metal 2 is pressurized to suppress the foaming.
- the inside of the measuring section 6 can be pressurized by the force of the molten metal 2 being extruded by the rotation of the screw 4, the foaming of the foamed material heated to the decomposition temperature of the foamed material by the heater can be performed. Can be suppressed.
- valve means 12 of the nozzle portion 13 is opened, and the screw 4 is advanced and the molten metal 2 is injected into the mold 24 by moving the screw 4 forward.
- the molded body is formed by rapidly foaming in a low-pressure mold 24.
- the moving metal By sliding the mold 24a and opening it by the volume of the foam, the pressure of the gas component is released at a stretch, and the molten metal 2 of the light alloy is foamed in the sliding direction and the foam cells are uniformly dispersed. Can be obtained.
- the molten metal 2 of the light alloy is injected into the mold 24, a skin layer is formed on the surface where the molten metal 2 and the mold 24 are in contact.
- the expansion of the light alloy 2 is limited by injecting the light alloy 2 into the mold 24 and opening the mold 24 substantially simultaneously with or after the injection. Since the pressure of the gas component is released suddenly, the molten metal 2 foamed to the inside of the mold 2 4 to the details inside the mold 2 is sufficiently distributed and complicated It is possible to form a foamed molded article having a variety of shapes.
- the injection amount of the molten light alloy 2 of the light alloy to be injected into the mold 24 is reduced by the amount of foaming with respect to the volume in the mold (here, the volume of the molded product), after the injection, The pressure of the gas component is released at a stretch in the mold 24, and the molten metal 2 of the light alloy is foamed, so that a foam molded article in which foam cells are uniformly dispersed can be obtained.
- the stop accuracy when the mold is opened and the parallelism of the mold are not affected.
- the size and shape of the foam molded article can be accurately controlled.
- the melt 2 of the light alloy to be supplied into the barrel 7 has a viscous material and a foam material added in a predetermined ratio in advance.
- the viscous material and the foaming material are uniformly dispersed in the kneading section 5 in the barrel 7, a molded article in which the foaming cells are uniformly dispersed can be obtained. Injection in this manner reduces the difference in the foaming state between each batch.
- the foam material is decomposed to generate gas components.
- the stop of the screw 4 keeps the volume of the measuring section 6 constant, and foaming of the molten metal (expansion of the gas components) is suppressed. Therefore, the molten metal 2 of the light alloy can be filled in every corner of the mold 24 by immediately releasing the pressure in the mold 24 immediately after injection and foaming. As a result, the reproducibility of the mold 24 with good transferability is improved, and it is possible to mold a foamed molded article having a complicated shape.
- a pressure reducing means such as a vacuum pump, the transferability and the moldability of the foam molded article having a complicated shape can be further improved.
- the injection section 9 of the injection foam molding apparatus 1 is a horizontal plunger type, and the barrel 7 is a vertical type as described above. It is composed of two members.
- FIG. 2 is an overall explanatory view showing a light alloy injection foam molding apparatus 40 according to this embodiment.
- the injection section 9 of the injection foam molding apparatus 1 described above is a horizontal plunger type, and the barrel 7 and the mold clamping apparatus 17 are the same as those described above. This is almost the same configuration as.
- the molten metal, foam material, thickening material, etc. of the light alloy may be those described above.
- This light alloy injection foam molding apparatus 40 has a supply port 5 for supplying a melt 2 of a light alloy to which a thickening material and a foaming material that decomposes at a high temperature to generate gas components are added at a predetermined ratio.
- a plunger 48 that can move back and forth along the axis of the cylinder 42.
- a measuring portion 49 is formed in front of the cylinder 42, and the plunger 48 moves forward. It has a metering function and an injection function for injecting the light alloy 2
- the injection molding apparatus 4 3 composed of the plunger injection machine 5 0, and a mold clamping apparatus 1 7 having a die 2 4 foaming a melt 2 emitted from the plunger injection machine 5 0.
- Temperature adjusting means 51 for adjusting the temperature of the molten gold 2 is provided.
- a nozzle 52 provided with a valve means 12 is provided at the tip of the plunger injection machine 50 of the injection foam molding apparatus 40. Then, the tip end thereof is in contact with a mold 24 which is horizontally slid by a mold clamping device 17 to be opened and closed.
- the hopper 53 is the same as the hopper 14 described above, and is provided with temperature control means such as a feeder and a heating heater. .
- the configuration of the barrel 47 is the same as that of the injection foam molding apparatus 1 according to the above-described embodiment.
- a screw hydraulic cylinder 56 having a screw 5 5 is connected, and a screw 44 is connected to a cylinder rod 55 of the screw hydraulic cylinder 56 via a drive motor 54.
- the cylinder rod 55 of the screw hydraulic cylinder 56 is protruded downward, and the stirring blade of the screw 44 is moved forward (moved downward) via the drive motor 54, whereby the barrel 47
- the melt 2 of the light alloy stored at the lower end is supplied to the inside of the cylinder 42 of the plunger injection machine 50 via the communication channel 41.
- the screw hydraulic cylinder 56 is configured such that a storage portion 46 can be formed in a lower portion inside the barrel 47 when it moves upward in the axial direction. Further, it has a stroke sufficient to move from the position where the storage section 46 is formed to the position where the communication flow path 41 can be closed.
- the outer peripheral surfaces of the barrel 47 and the cylinder 42 of the plunger injection machine 50 are covered with a temperature adjusting means 51.
- This temperature adjusting means 51 includes a plurality of separated heaters. By controlling the heating heater, at least the molten light alloy in the barrel 47 2 can be adjusted to a temperature lower than the decomposition temperature of the added foam material, and at least the molten material of the light alloy 2 in the cylinder 42 is decomposed to add the gas to the foam material. The temperature can be adjusted above the temperature at which the components are generated.
- a plunger injection machine 50 is connected to the barrel 47 via a communication channel 41 formed at the lower end of the barrel 47.
- the plunger injection machine 50 has a cylinder 42 having a nozzle portion 52 provided with a valve means 12 at the front, and a plunger 48 which can move forward and backward inside the cylinder 42.
- the plunger 48 is driven by the hydraulic pressure of the plunger hydraulic cylinder 57.
- a measuring section 49 is formed at the front of the cylinder 42 when the plunger 48 retreats. The volume of the measuring section 49 can be appropriately set by the retreat amount of the plunger 48 so as to have a capacity necessary for obtaining a molded product.
- the plunger hydraulic cylinder 57 is located at a position where the communication flow path 41 connected near the distal end of the re-cylinder 42 can be closed by advancing the plunger 48 from the position where the measuring section 49 is formed. It has enough stroke to move up to
- the plunger 48 is provided so as to close the communication channel 41 when the injection is completed.
- the valve means 12 of the nozzle portion 52 is in a closed state except during injection.
- a means for closing the nozzle with a mechanical or spring-type shut-off valve provided at the nozzle tip can be used.
- the injection foam molding apparatus 40 as described above, at least immediately before injection, a gas component is generated in the molten metal 2 and foaming of the molten metal 2 is suppressed, and after injection, the gas is generated in the mold 24. It can be foamed at once Since the molten metal 2 spreads to every corner of the mold 24, the reproducibility with good transferability to the mold 24 is improved. In addition, it is possible to mold a foamed molded article having a complicated shape. Further, by configuring the barrel 47 and the injection section from two members, maintenance of the apparatus can be easily performed.
- the molten metal 2 of the light alloy is similarly poured into the hopper 53 from the melting furnace described above. Then, a thickening material and a foaming material that decomposes at a high temperature to generate a foamable gas are added to the molten metal 2 at a predetermined ratio, and the temperature control means of the hopper 53 is used to control the temperature of the foaming material above the liquidus temperature. Adjust the temperature below the decomposition temperature. In this way, a supply step of supplying the melt 2 of the light alloy whose temperature has been adjusted into the barrel 47 is performed.
- the thickener and foam to be added to the molten metal 2 may be fed to the hopper 53 with a feeder provided, or the melt 2 to which a predetermined amount of the thickener and the foam are added may be charged to the hopper 53.
- the molten metal 2 is supplied to the upper part of the barrel 47, and the temperature of the molten metal 2 is adjusted to be higher than the liquidus temperature and lower than the decomposition temperature of the foamed material by the respective temperature adjusting means 51, and is held therein.
- the viscous material and the foaming material are uniformly dispersed in a stirring step in which the screw 44 is rotated in the kneading section 45 and the molten metal 2 is stirred.
- an inert gas quantitative supply device (not shown) should be provided for the barrel 47 corresponding to the kneading unit 45. Accordingly, when the thickener is stirred and dispersed, the inert gas as a foaming material is supplied to the molten metal 2 at a predetermined ratio, and the inert gas can be uniformly dispersed in the molten metal 2.
- the plunger 48 of the plunger injection machine 50 has advanced to the position where the communication flow path 41 is closed as shown in FIG. And ba
- a storage section 46 is formed between the screw 44 and the communication flow path 41 instead of the measuring section 6 described above. 4 Perform primary weighing with 6.
- the storage section 46 is adjusted by the retreat amount of the screw 44 so as to have a volume larger than the amount of molten metal to be injected.
- the screw 44 may stop rotating and move backward, or may rotate and move backward.
- the above-described backflow prevention means can be provided at the tip of the screw 44.
- the communication flow path 41 is opened, and the plunger 48 of the plunger injection machine 50 is retracted to the measuring section 49 formed in the front of the cylinder 42 from the barrel 47 via the communication flow path 41.
- the measuring process of introducing and measuring the molten metal 2 is performed.
- the plunger 48 is retracted, and at the same time, the screw 44 in the barrel 47 is advanced (moved downward).
- the plunger 48 is retracted until it reaches a predetermined position set according to the volume of the molded product, the molten metal 2 of the light alloy is formed in front of the cylinder 42 while applying the pressing force of the screw 44.
- Secondary weighing is performed by press-fitting the weighing section 49 while applying positive pressure.
- the thickener and the foaming material are added in a predetermined ratio to the molten metal 2 in advance, and the temperature is maintained at a temperature lower than the decomposition temperature of the foaming material. Then, the foaming material is introduced into the injection molding device 43 and stirred in the injection molding device 43 Therefore, the thickener and the foaming material are uniformly dispersed, and the difference in the foaming state for each injection is reduced.
- the screw 44 closes the communication passage 41, preventing the backflow of the light alloy 2 from the weighing section 49. Is done.
- the nozzle 52 at the tip of the cylinder 42 of the plunger injection machine 50 is closed by the valve means 12.
- the temperature is adjusted by each temperature adjusting means 51 so that the temperature of 2 is equal to or higher than the decomposition temperature of the foam material, and decomposition is promoted in the measuring section 49 in which the volume is kept constant by stopping the retreat of the plunger 48.
- a pressurizing step is performed in which the molten metal 2 is put into a pressurized state and its foaming is suppressed. That is, as the molten metal 2 of the light alloy is heated to a temperature at which the foamed material is decomposed in the measuring section 49 by the temperature adjusting means 51, the foamed material gradually starts to decompose and gas components are generated. Since the increase in volume is suppressed by the back pressure, the foaming of the molten metal 2 is suppressed in the pressurized state.
- the molten metal 2 whose foaming is suppressed in the pressurizing step, is injected into the mold 24 communicating with the inside of the cylinder 42 in front of the re-cylinder 42 by advancing the plunger 48, and foaming is performed.
- An injection foaming step is performed, and a molded body is molded.
- the injection amount of the light alloy melt 2 to be injected into the mold 24 is weighed in an amount equivalent to the inner volume of the mold 24, similarly to the method described above. Opening the mold by the amount of foam to obtain a foam molded body, and reducing the injection amount of the light alloy 2 to be injected into the mold 24 by the amount of foam and injecting the foam into the mold with a constant volume The method of obtaining the body can be applied.
- the foam material is decomposed just before the injection and a gas component is generated.
- the transferability of the mold 24 is good
- the foam molding can be formed.
- the transferability and the moldability of a foamed molded article having a complicated shape can be further improved by reducing the pressure in the mold by the pressure reducing means as in the above-described embodiment.
- the inert gas quantitative supply device (not shown) using the injection foam molding devices 1 and 40, After dispersing the inert gas by stirring in the kneading sections 5 and 45 of the barrels 7 and 47 in the same manner as described above, a predetermined amount is measured to inject the molten metal 2 into the mold 24 and the mold 2 Inject into 4. If the temperature is increased by the temperature adjusting means 10 and 51 before injection into the mold 24, the expansion of the gas component is promoted. However, in the injection foam molding apparatus 1, the screw 4 is stopped by retreating and the injection is stopped.
- the increase in volume is suppressed by the retraction stop of the plunger 48, and in such a pressurized state, foaming of the molten metal 2 (expansion of gas components) is suppressed.
- the valve means 1 2 of the nozzles 1 3 and 5 2 is opened, and the screw 4 and plunger 48 are advanced to inject the light alloy 2 into the mold 24 to act on the molten metal 2.
- the molded body is formed by releasing the pressing force at a stretch and causing foaming.
- the inert gas is supplied into the molten metal 2 at a predetermined ratio and is uniformly dispersed.
- a molded article can be formed.
- a predetermined amount of a thickener is added to the melt 2 of the light alloy supplied to the hopper 53 from the melting furnace.
- the temperature control means of the hopper 5 3 To adjust the temperature above the liquidus temperature.
- the molten metal 2 whose temperature has been adjusted in this way is supplied into the barrel 47, and while the temperature of the molten metal 2 is adjusted to a liquidus temperature or higher by the temperature adjusting means 51, the molten metal 2 is stirred in the kneading section 45 to increase the viscosity.
- the material is dispersed.
- Ar gas is dispersed into the molten metal 2 by supplying a high-temperature A gas to the molten metal 2 from an inert gas quantitative supply device (not shown). It is sent to the lower reservoir 46.
- the measured molten metal 2 is heated by the temperature adjusting means 51 in the measuring section 49 before injection and the expansion of the contained Ar gas is promoted, but the volume of the molten gas 2 is reduced by stopping the plunger 48. Is constant, and foaming is suppressed, so that the pressure is released all at once in the mold 24 immediately after injection and foaming is performed, so that the molten metal 2 spreads to every corner of the mold 24 and the foam cells are evenly dispersed. A foamed molded article can be obtained.
- the injection foam molding apparatus according to the present embodiment has the same configuration as the injection foam molding apparatus 1 or the injection foam molding apparatus 40 described above except for the points described later. Therefore, description of similar points is omitted, and only different points will be described.
- a melt of a light alloy to which a thickener and a foaming material that decomposes at high temperature to generate a gas component is added is dispersed and measured, and then injected into a mold from an injection nozzle.
- a nozzle heating means capable of raising the temperature of the molten metal to a temperature higher than the decomposition temperature of the foamed material when the molten metal at the time of injection passes through the nozzle.
- a known heating means such as a resistance heater or an induction heater provided on the outer periphery of the injection nozzle can be used, but an induction heating heater which can shorten the heating time is more preferable.
- a molten metal to which a thickening material and a foam material are added in a predetermined ratio in advance is prepared, as in the above-described embodiment.
- the thickener and the foamed material are evenly dispersed, so that the difference in the foaming state between injections is reduced.
- the temperature of the molten metal is adjusted to a temperature lower than the decomposition temperature of the foamed material at the time of measurement to suppress foaming, and the temperature of the molten metal rises above the decomposition temperature of the foamed material when passing through the injection nozzle immediately before injection into the mold.
- the foam material When heated, the foam material decomposes when passing through the injection nozzle (immediately before injection into the mold) and foams rapidly in the mold after injection due to the gas components generated. Therefore, it is not necessary to reheat the mold beyond the temperature decomposition of the foam material, and the reproductivity is increased.
- the present invention has been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and can be changed without departing from the technical scope of the present invention.
- One member may be provided to supply the molten metal from the hopper to the barrel intermittently. By doing so, it is possible to easily add the thickener and the foaming material at a predetermined ratio to the molten metal stored in the hopper.
- the screw 44 is retracted to perform primary weighing in the storage section 46 formed in front of the barrel 47, and then the plunger.
- the screw 4 4 is moved forward to the measuring section 49 formed inside the cylinder 42 by retracting 48 to introduce the molten metal 2 from the barrel 47 via the communication flow path 41 for measurement.
- the screw 4 4 is rotated without retracting, and the plunger 48 is retracted. Is also good. By doing so, the configuration of the re-equipment that does not require the screw hydraulic cylinder 56 can be simplified, and the primary weighing operation can be omitted.
- pressure detecting means such as a pressure gauge and a pressure sensor are provided in the hydraulic circuit of the hydraulic cylinders 21 and 56 for the screw and the hydraulic cylinder 57 for the plunger, so that the temperature of the molten metal rises above the decomposition temperature of the foamed material.
- the back pressure generated in the screw or the plunger 48 at the time of the operation may be detected. By doing so, the temperature rise state of the molten metal 2 or the degree of decomposition of the foam material can be estimated from the change in the back pressure accompanying the temperature rise of the molten metal 2.
- the detected value can be used as a control parameter to control the hydraulic cylinder pressure to control the foaming state of the molten metal 2. That is, the molten metal 2 is partially foamed before injection, the partially expanded molten metal 2 is pressurized to suppress further foaming, and the molten metal 2 is injected into the mold 24. Before performing injection (measurement) when performing control to foam the foamed part rapidly in the mold 24 The molten metal 2 can be controlled to have a desired foaming state. Further, the molten metal 2 may be partially foamed by controlling the position of the hydraulic cylinder instead of controlling the pressure of the hydraulic cylinder.
- the temperature of the molten metal is adjusted to at least the decomposition temperature of the foam material immediately before injection and foaming is suppressed in a pressurized state, The difference in the foaming state between each batch is reduced.
- the foam material is decomposed immediately before injection, but since the volume in the measuring unit is constant, foaming of the melt is suppressed and the melt is in a pressurized state.
- the molten metal is foamed by releasing the pressure in the mold immediately after injection, so that the mold can be transferred to every corner of the mold and the transferability of the mold is good. It becomes.
- the mold temperature does not need to be heated to a temperature higher than the decomposition temperature of the foam material, productivity is improved.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003252353A AU2003252353A1 (en) | 2002-07-31 | 2003-07-30 | Method and apparatus for injection foaming molding |
US10/522,840 US20060000572A1 (en) | 2002-07-31 | 2003-07-30 | Method and apparatus for injection foaming molding |
DE60311673T DE60311673T2 (de) | 2002-07-31 | 2003-07-30 | Verfahren und vorrichtung zum schaumspritzgiessen |
EP03771440A EP1553194B1 (en) | 2002-07-31 | 2003-07-30 | Method and apparatus for injection foaming molding |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-223322 | 2002-07-31 | ||
JP2002223322A JP2004058130A (ja) | 2002-07-31 | 2002-07-31 | 軽合金の射出発泡成形方法及び射出発泡成形装置 |
Publications (1)
Publication Number | Publication Date |
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WO2004011686A1 true WO2004011686A1 (ja) | 2004-02-05 |
Family
ID=31184960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2003/009698 WO2004011686A1 (ja) | 2002-07-31 | 2003-07-30 | 射出発泡成形方法及び射出発泡成形装置 |
Country Status (9)
Country | Link |
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US (1) | US20060000572A1 (ja) |
EP (1) | EP1553194B1 (ja) |
JP (1) | JP2004058130A (ja) |
KR (1) | KR100689168B1 (ja) |
CN (1) | CN1308473C (ja) |
AT (1) | ATE353374T1 (ja) |
AU (1) | AU2003252353A1 (ja) |
DE (1) | DE60311673T2 (ja) |
WO (1) | WO2004011686A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007061865A (ja) * | 2005-08-31 | 2007-03-15 | Kobe Steel Ltd | 金属発泡体およびその製造方法 |
US20070131375A1 (en) * | 2005-12-09 | 2007-06-14 | Husky Injection Molding Systems Ltd. | Thixo-molding shot located downstream of blockage |
US7699092B2 (en) * | 2007-06-18 | 2010-04-20 | Husky Injection Molding Systems Ltd. | Metal-molding system and process for making foamed alloy |
AT512229B1 (de) | 2011-11-10 | 2014-10-15 | Mold Thix Consulting Bueltermann Gmbh | Vorrichtung, anlage und verfahren zum druckgiessen von metallischem material im thixotropen zustand |
JP6146878B2 (ja) * | 2015-01-09 | 2017-06-14 | 東芝機械株式会社 | 射出装置、成形装置及び成形方法 |
JP6443270B2 (ja) * | 2015-09-02 | 2018-12-26 | トヨタ自動車株式会社 | 発泡金属の製造方法 |
CN107498018A (zh) * | 2017-09-30 | 2017-12-22 | 昆山盛事达机械有限公司 | 半固态镁合金注射成型机前置螺杆旋转装置 |
CN108405831A (zh) * | 2018-03-20 | 2018-08-17 | 北京科技大学 | 通过压铸过程制备泡沫铝及铝合金异型件的方法 |
CN112427622B (zh) * | 2020-11-23 | 2021-09-03 | 清华大学 | 泡沫铝铸造成形方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH01127631A (ja) * | 1987-11-10 | 1989-05-19 | Agency Of Ind Science & Technol | 発泡金属の製造方法 |
JPH09241780A (ja) * | 1996-03-11 | 1997-09-16 | Shinko Kosen Kogyo Kk | 金属発泡体の製造方法 |
JP2002371327A (ja) * | 2001-06-18 | 2002-12-26 | Shinko Wire Co Ltd | 発泡金属の製造方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1164102B (de) * | 1956-03-19 | 1964-02-27 | Lor Corp | Verfahren zur Herstellung von Metallschaumkoerpern |
DE1408468B2 (de) * | 1959-01-05 | 1972-10-19 | Lor Corp., Enid, OkIa. (V.St.A.) | Verfahren zur herstellung von schaummetall in einem kontinuierlichen arbeitsgang |
US2983597A (en) * | 1959-06-11 | 1961-05-09 | Lor Corp | Metal foam and method for making |
AT406027B (de) * | 1996-04-19 | 2000-01-25 | Leichtmetallguss Kokillenbau W | Verfahren zur herstellung von formteilen aus metallschaum |
AT408076B (de) * | 1996-10-07 | 2001-08-27 | Mepura Metallpulver | Verfahren zur herstellung von schaummetall- bzw. schaummetall/metall-verbund-formkörpern, anlage zu deren herstellung und deren verwendung |
US6840302B1 (en) * | 1999-04-21 | 2005-01-11 | Kobe Steel, Ltd. | Method and apparatus for injection molding light metal alloy |
JP3377185B2 (ja) * | 1999-09-30 | 2003-02-17 | 日精樹脂工業株式会社 | 金属材料の射出成形機及び射出成形方法 |
DE10104339A1 (de) * | 2001-02-01 | 2002-08-08 | Goldschmidt Ag Th | Verfahren zur Herstellung von Metallschaum und danach hergestellter Metallkörper |
US20030094257A1 (en) * | 2001-11-19 | 2003-05-22 | Takata Corporation | Shutterless injection molding method and apparatus |
-
2002
- 2002-07-31 JP JP2002223322A patent/JP2004058130A/ja not_active Withdrawn
-
2003
- 2003-07-30 EP EP03771440A patent/EP1553194B1/en not_active Expired - Lifetime
- 2003-07-30 KR KR1020057001542A patent/KR100689168B1/ko not_active IP Right Cessation
- 2003-07-30 DE DE60311673T patent/DE60311673T2/de not_active Expired - Fee Related
- 2003-07-30 AT AT03771440T patent/ATE353374T1/de not_active IP Right Cessation
- 2003-07-30 US US10/522,840 patent/US20060000572A1/en not_active Abandoned
- 2003-07-30 WO PCT/JP2003/009698 patent/WO2004011686A1/ja active IP Right Grant
- 2003-07-30 AU AU2003252353A patent/AU2003252353A1/en not_active Abandoned
- 2003-07-30 CN CNB038181134A patent/CN1308473C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01127631A (ja) * | 1987-11-10 | 1989-05-19 | Agency Of Ind Science & Technol | 発泡金属の製造方法 |
JPH09241780A (ja) * | 1996-03-11 | 1997-09-16 | Shinko Kosen Kogyo Kk | 金属発泡体の製造方法 |
JP2002371327A (ja) * | 2001-06-18 | 2002-12-26 | Shinko Wire Co Ltd | 発泡金属の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
DE60311673D1 (de) | 2007-03-22 |
EP1553194A4 (en) | 2005-11-30 |
CN1671872A (zh) | 2005-09-21 |
EP1553194B1 (en) | 2007-02-07 |
JP2004058130A (ja) | 2004-02-26 |
US20060000572A1 (en) | 2006-01-05 |
ATE353374T1 (de) | 2007-02-15 |
AU2003252353A1 (en) | 2004-02-16 |
KR20050026529A (ko) | 2005-03-15 |
DE60311673T2 (de) | 2007-11-22 |
CN1308473C (zh) | 2007-04-04 |
EP1553194A1 (en) | 2005-07-13 |
KR100689168B1 (ko) | 2007-03-09 |
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